A system of experimental studies of electric properties of rocks in the inert medium
In the work presented, the construction and the hardware-methodological features of the automated measuring system developed and realized at the Institute of Geophysics of the National Academy of Sciences of Ukraine designed to study electrical parameters of the mineral substance at temperatures up to 1100 °C in oxygen-containing and inert media are described in detail. The results of some experiments performed at the stage of experimental tests of the complex in the temperature range from room temperature to 700 °C are shown. The factors influencing the character of the obtained temperature-frequency dependences of the electrical parameters of the investigated samples are considered and analyzed. It is shown that the formation of oxides in an oxygen-containing medium increases the electrical resistance. The difference in the gradient of the change in r from the temperature, especially in the range 300—500 °C, is due to the fact that the electrical conductivity is carried out mainly by impurity ions and crystal lattice defects. As the temperature is raised, the dielectric constant of ionic crystals increases, which is due to the weakening of the bond between the individual ions. Low-frequency permittivity is the most sensitive to deformation phase transitions and is a more informative parameter, since it varies with a larger gradient.
Full Text:PDF (Русский)
Auzin A. A., Zatsepin S. A., 2015. About the dispersion of dielectric permeability of a geological environment (in connection with interpretation of GRP materials). Vestnik VGU. Ser. geologiya (4), 122—127 (in Russian).
Gufan Yu. M., 1982. Structural phase transitions. Moscow: Nauka, 304 p. (in Russian).
Zhdanov G. S., Khundzhua A. G., 1988. Lectures on solid state physics: Principles of structure, real structure, phase transformations. Moscow: Publ. House Moscow University, 231 p. (in Russian).
Korchin V. A., Burtnyy P. A., Kobolev V. P., 2013. Thermobaric Petrophysical Modeling in Geophysics. Kiev: Naukova dumka, 303 p. (in Russian).
Korchin V. A., Karnaukhova Ye. Ye., Nekh A. S., Kravchuk M. V., 2011. New instrumentation and methodological development of the study of physical characteristics of rocks under high pressure and temperature: Proceedings of the 12th International Conference “Physical and Chemical and Petrophysical studies in the Earth sciences”. Moscow, P. 145—148 (in Russian).
Kravchuk M. V., Korchin V. A., 2014. Instrument-methodological features of studying the temperature changes in the electrical parameters of rocks in the inert and oxidizing environments: Proceedings of the International Scientific and Practical Conference “Current state and current trends in geological study and integrated development of subsoil resources of the CIS countries”, 13—15 November, 2013. Minsk, P. 90—93 (in Russian).
Kravchuk M. V., Korchin V. A., 2015. Informativity of the study of electrical properties of rocks in an inert medium: 14th EAGE International Conference on Geoinformatics — Theoretical and Applied Aspects1 — Geoinformatics — an Innovative View of the Earth (May 11, 2015).
Pavlov P. V., Khokhlov A. F., 2000. Solid State Physics. Moscow: Vysshaya shkola, 494 p. (in Russian).
Parkhomenko E. I., 1984. Electrical properties of minerals and rocks. In: Physical properties of rocks and minerals (petrophysics). Ed. N. B. Dortman. Moscow: Nauka, P. 261—269 (in Russian).
Operating Instructions RLC-meter MNS 1100. Kyiv, 2008. promix.com.ua.
Shepel S. I., Kravchuk M. V., 2007. Deep changes electrical parameters of crystalline rocks and the nature of the anomalies of electrical conductivity in the Earth’s crust. Geofizicheskiy zhurnal 29(3), 67—77 (in Russian).
Shanov S., Yanev Y., Lastovickova M., 2000. Temperature dependence of the electrical conductivity of granite and quartz-monzonite from south Bulgaria: geodynamic inferences. J. Balkan Geophys. Soc. 3(2), 13—19.
Licensed under a Creative Commons Attribution 4.0 International License.